Machine for the manufacture of footwear



7 G. DE- VOOGHT momma FOR THE umumcwunm 0F FOOTWEAR Filed March 6. 1925 Patented Aug. 9, 1927.

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PATENTQFF GUSTAVE DE VOOGHT, OF HERENTHALS, BELGIUM.

MACHINE FOR THE MANUFACTURE OF FOOTWEAR.

Application filed March 6, 1925, Serial No. 13,562, and in Belgium August 22, 1924.

The present invention relates to nail or tack forming and driving machines employed in the manufacture of footwear, and is more particularly directed to machines of that type adapted for use in nailing soles to the curved anterior face of wooden heels of the Louis XV pattern.

It has previous to this time between attempted to fasten Louis XV heels with tack forming and driving machines adapted for welt work, but such attempts have not been successful, for the reason that these machines are not adapted for the purpose of securing heels as they are not so constructed as to permit the heel of the shoe being nailed to approach close enough to the line ofidrive.

The machine according to the invention is an improvement over the well known type of nail or tack forming and driving machines, and the improvement consists in so reorganizing nail or tack forming and driving machines as to adapt them for nailing soles to wooden heels of Louis XV pattern,

In order that tlie improvements or novel features characterizing the invention may be more readily pointed out, the portion of the machine referred to embodying such irnprovements is, by way of example, illustrated by the accompanying drawing, where- 0 in: Figure 1 is a front elevation of a portion of the machine with the invention applied thereto to adapt the said machine for use for the purpose of securing soles to wooden Louis XV heels, Figure 2 is a horizontal section in the plane 11-11 of Figure 1, and Figure 3 is a side-view in the direction of the arrow X Figure 1 showing a detail of the machine illustrated by Figures 1 and 2.

Referring to the said drawing, the machine illustrated comprises a stationary knife or cutter 1 and a movable knife or cutter 2, of which the latter is operated by a tackcutting lever 3, thus named because the knives or cutters of which one is operated by this lever cooperate in automatically cutting out of a steel band the conical tacks used for fixing or nailing the work. The said lever 3 has a circular portion 6 formed with an integral pivot 4 which extends backwardly as shown in Figure 2 and is rotatably mounted in a suitably constructed portion 5 of the body of the machine.

The knives 1 and 2 are protected by coverplates 7 and 8 respectively fixed in position by means of bolts 9' and 10'. The tacks on being cut-out of the steel band by the knives it down into the piece of work applied under the lower end of the said nose. 7

The driver is fitted to the lower end of a vertical reciprocatory plunger 14 which tra-, verses diametrically the circular portion Got the front face of the lever 3. For the purpose of holding the driver 13 firmly in the lower end of the plunger 14, the latter .is

fitted with a collar 15 having an internally threaded boss 16 with a set screw 17. In the known machines of the type previously referred to, as used for carrying out welt work, the common axis of the said boss and set screw extends forwardly at right angles to the front face of the circular portion6 of the lever 3. r i v j Now, in the improved machine according to the invention, the boss 16 of the collar 15 and its set screw 17 are placed in such a position that they extend towards the left of the said figureslaterally of the plunger 14 and with their common axis in a plane parallel to the front face of the circular portion 6 of the lever 3. Furthermore, in order to enable the collar 15 and its set screw 17 to be placed inthe said position, the half of the circular portion 6 of the lever 3 adjacent'the stationary knife 1, i. e. comprised between the driver and the plunger 14, has its front face (which in similar machines used for carrying out welt work is plain and flat) formed with a recess 18 for receiving the boss 16 and set screw 17 The'object of this arrangement is to enable'the work to be held closer, and the visible porton of the driver 13 and the lower end of the plunger 14 are according to the invention covered by a protector plate 21 screwed to the half of the circular portion 6 of the lever 3 nearest the movable knife 2, so as to avoid any possibility of the footwearv being accidentally damaged by the lower end of the plunger 14 and the parts fitted thereon during their reciprocatory motion notwithstanding the fact that the shoe or boot is held close to the machine.

Also, according'to the invention, the cover-plates 7 and 8 of the movable and vstationary knives 1 and 2 respectively, in-

stead of being fixed, as is the case in similar machines constructed for carrying out welt work, by means of bolts whose headsv project on the outer face of such coverplates, are secured by means of bolts 9' and 10 respectively with countersunk heads 9 and 10 coming flush with the outer face of the cover-plates 7 and 8, and the latter have their front outer edge widely rounded as shown at 19 and 20 respectively for the purpose of enabling the work to be held in all convenient positions quite close to the machine.

Finally, the lower end of the stationary nose 11 is according to the invention bevy elled upwardly frointhe front towards the rear as shown at 22 in Figure 3, so as to obtain an inclined surface in orderto avoid the sole slipping during the nailing or tackdriving operation.

Except for the improven'ients just de scribed and'which form the subject-matter of the invention the general construction of the machine embodying such improvements, and more particularly the construction 0% the parts not illustrated, remains the same as that of an ordinary machine for fixing rands and Welts, of the type previously referred to.

The improvements according to the in'- vention enable the work to be placed in any required and convenient positions without risk of the same being damaged, and in such a manner that the tacks'can always be driven perpendicularly to the sole as in the case of handwork, and the machine improved according tothe invention offers the advantage that the soles may be secured to.

Y the heels by means of mechanically cut conical tacks having rough edges by which the sole is fixed securely and which may be driven at one stroke to the required depth which is adjustable at will, whereas in the case of handwork the fixation is effected by means of small tacks with heads of reduced size, which do not offer the required resistto the invention is simple and rapid and the soles fixed by means of same offer a much greater regularity than those fixed by hand, a tact whichhas a favourable"infinence on the subsequent'stages of inanutac Lure of footwear. I

The production attained by using the machine according to the invention is much superior than that reached in the case of handwork, the said machine being capable of securing about 500 pairs of soles within 8 hours.

Finally, another advantage of the invention resides in the tact that the improved machine may readily, by altering the position of the boss 16 and set'screw 1'? after removing the protector plate 21, be adapted for use for fixing rands and welts, the machine as described being of course completed, in a manner well known in machine of the type referred to applied to the carry ing out ot-welt work, by the usual worksupporting table or device below the stationary guiding L avelt-feeding and guiding device. I

Iclaim: a V, j In a machine of the type set torth'for securing' the soles ot',1"'ootwear to woodenoiece and by the ordinar Louis XV heels, the combination with a sta- V its lower end witha driver, of a' collar tor fixingsaid driver to said plunger, having a threaded boss with set screw extending laterally of the plunger with their common axis in a plane parallel to the front-face of the aforesaid lever, said tack cuttinglever having a recessed portion to receive said boss and set-screw formed in the front face of the circular portion adjacent the sta' tionary knife, cover-plates for the stationary andmovable knivesisecured in positionfby means of bolts with countersunk heads flush with said coverplates, a protector-plate for the driver and thelower end of the plunger, fixed to the front face of the circularportion of the aforesaid lever, and a stationary nose for the driver-pin having its lower end bevelled upwardly'trom the front towards the rear, substantially as described r In testimony whereof I signed hereunto myname. c I 

